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Question
Find the square root the following by prime factorization.
1764
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Solution
Resolving 1764 into prime factors:
1764 = 2 x 2 x 3 x 3 x 7 x 7
Grouping the factors into pairs of equal factors:
1764 = (2 x 2) x (3 x 3) x (7 x 7)
Taking one factor for each pair, we get the square root of 1764:
2 x 3 x 7 = 42
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